Early Version
… and the Lord shal do a meruelows thing bitwix possessiouns of ‘Yrael and the possessions of Egipcyens, that no thing algatis perishe of thes thingis that pertenen to the sones of Yrael.

Later Version
… and the Lord schal make a merueilous thing bitwixe the possessiouns of Israel and the possessiouns of Egipcians, that outirli nothing perische of these thingis that perteynen to the sones of Israel.

Modern English
… and the Lord will make a marvelous thing between the possessions of Israel and the possessions of Egyptians, so that nothing perishes anyhow, of the things that pertain to the sons of Israel.

Additional note, context for Romans 11.
Therefore, say I, is it possible that God has put his people away? Far from that. I am an Israelite of the line of Abraham, of the tribe of Benjamin. The Lord has not put away his people, those about whom he had thought. Would you not know what the scripture says on Elias? How he implored God against Israel: Lord, they have slain your prophets, buried your altars, and now, I remain alone, and they are seeking my life. But what did God answer to him? I have left myself seven thousand men who have not bent their knees for Baal. Therefore, in this time, reliefs of a second choosing are by grace of avail. What is of grace is not of works, but otherwise grace is not grace. Therefore, what Israel has sought, is not going to be, but the choosing is going to be (quid ergo quod quaerebat Israhel hoc non est consecutus; electio autem consecuta est); other matters truly are oblivion (ceteri vero excaecati sunt).